BUSINESS OPTIMIZATION CHARGES - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Restructuring Cost and Reserve [Line Items]
Expected additional pre-tax costs	$ 3		$ 3
Charges	14	$ 4	58	$ 21
Employee termination costs
Restructuring Cost and Reserve [Line Items]
Charges	5	$ 3	31	17
Employee termination costs | Kidney Care
Restructuring Cost and Reserve [Line Items]
Charges	$ 6		$ 31
Asset write offs | New Operating Model
Restructuring Cost and Reserve [Line Items]
Charges				$ 6